1284379412 has 12 divisors (see below), whose sum is σ = 2248157940. Its totient is φ = 642048576.

The previous prime is 1284379403. The next prime is 1284379417. The reversal of 1284379412 is 2149734821.

It can be written as a sum of positive squares in 2 ways, for example, as 530657296 + 753722116 = 23036^2 + 27454^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1284379412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1284379417) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13283 + ... + 52394.

It is an arithmetic number, because the mean of its divisors is an integer number (187346495).

Almost surely, 2^1284379412 is an apocalyptic number.

It is an amenable number.

1284379412 is a deficient number, since it is larger than the sum of its proper divisors (963778528).

1284379412 is a wasteful number, since it uses less digits than its factorization.

1284379412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70570 (or 70568 counting only the distinct ones).

The product of its digits is 96768, while the sum is 41.

The square root of 1284379412 is about 35838.2395214944. The cubic root of 1284379412 is about 1087.0039238645.

The spelling of 1284379412 in words is "one billion, two hundred eighty-four million, three hundred seventy-nine thousand, four hundred twelve".